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Showing result 16 - 20 of 20 essays matching the above criteria.

  1. 16. Evaluation of the lithium formate EPR dosimetry system for dose measurements around 192Ir brachytherapy sources

    University essay from Medicinsk strålningsfysik (tills m KI)

    Author : Laura Antonovic; [2008]
    Keywords : Lithium formate; EPR; 192Ir; Dose measurements;

    Abstract : The dose distribution around brachytherapy (BT) sources is characterized by steep dose gradients and an energy spectrum varying rapidly with depth in water around the source. These two properties make experimental verification of the dose distribution difficult, and put high demands on the dosimetry system in use regarding precision, size and energy dependence. READ MORE

  3. 17. The role of blood pooling and fibre positioning in Interstitial Photodynamic Therapy

    University essay from Lunds universitet/Atomfysik

    Author : Christopher Orth; [2008]
    Keywords : Physics and Astronomy;

    Abstract : For the dosimetry of interstitial photodynamic therapy (IPDT), the fibre positioning and the distributed light fluence that activates the treatment are essential. With sufficient supply of oxygen and photosensitiser, the treatment effect depends entirely on the distributed light. READ MORE

  4. 18. Prostate brachytherapy: Pre-plan and real-time transperineal ultrasound guided Iodine-125 permanent seed implants at Södersjukhuset, Karolinska University Hospital.

    University essay from Medicinsk strålningsfysik (tills m KI)

    Author : Johanna Kramar; [2008]
    Keywords : Brachytherapy; Iodine-125; Permanent seed implant; Guidelines; Intraoperative planning; Real-time;

    Abstract : Purpose: The aim of this thesis is to study the European (ESTRO/EAU/EORTC) and American (ABS) guidelines how to report the permanent seed implant and the most significant dosimetric parameters. It will also report on the permanent seed implant at Södersjukhuset, Karolinska University Hospital according to the guidelines. READ MORE

  5. 19. Brachyterapy for cancer of the cervix 3D Dose distributions for new ring applicator using BrachyVision, for clinical use

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Marita Holmgren-Andersson; [2006]
    Keywords : Strålterapi; Medicine and Health Sciences;

    Abstract : Curative radiotherapy for cancer of the cervix consists of a combination of extern beam radiotherapy (EBRT) and brachytherapy (BT). The most important prognostic factors are tumour size, tumour extension and lymph node involvement. READ MORE

  6. 20. Doseplanning ocular tumors with 125I-seeds

    University essay from Medicinsk strålningsfysik (tills m KI)

    Author : Emil Bengtsson; [2006]
    Keywords : Brachytherapy; Dosimetry; I-125-seeds; Dose distribution; Ophthalmic applicator; Eye plaque; Eye cancer;

    Abstract : Since 1986 patients with ocular malignant melanoma have been treated with Ru-106 plaques at S:t Erik Eye Hospital. In 1998 I-125 radioactive seed plaques was presented as an alternative to Ru-106 when treating tumors with an apical height greater than 7 mm. READ MORE